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CN108231845B - Display panel and electronic equipment - Google Patents

Display panel and electronic equipment Download PDF

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Publication number
CN108231845B
CN108231845B CN201810001950.4A CN201810001950A CN108231845B CN 108231845 B CN108231845 B CN 108231845B CN 201810001950 A CN201810001950 A CN 201810001950A CN 108231845 B CN108231845 B CN 108231845B
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China
Prior art keywords
pixel
sub
display panel
pixels
color
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Application number
CN201810001950.4A
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Chinese (zh)
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CN108231845A (en
Inventor
夏婉婉
陈娴
韩立静
辛宇
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Wuhan Tianma Microelectronics Co Ltd
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Shanghai Tianma AM OLED Co Ltd
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Priority to CN201810001950.4A priority Critical patent/CN108231845B/en
Priority to US15/974,340 priority patent/US10614753B2/en
Publication of CN108231845A publication Critical patent/CN108231845A/en
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0465—Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0457—Improvement of perceived resolution by subpixel rendering
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention provides a display panel and an electronic device comprising the same, wherein the display panel comprises a plurality of sub-pixels and a plurality of pixel units, and the plurality of sub-pixels comprise at least a first color sub-pixel and at least a second color sub-pixel; the plurality of sub-pixels are arranged in one-to-one correspondence with the plurality of pixel units. The application provides a display panel can have high aperture opening ratio in the assurance, and its preparation technology degree of difficulty of greatly reduced to improve display panel's preparation technology yield, show the preparation cost who reduces display panel, and can greatly promote display panel's display performance, provide comfortable user experience.

Description

Display panel and electronic equipment
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and an electronic device including the display panel.
Background
With the development of optical technology and semiconductor technology, flat panel Display technologies such as Liquid Crystal Display (LCD) and Organic Light Emitting Diode (OLED) Display panels have been widely used in various electronic products due to their features of thinner and lighter body, lower cost and energy consumption, faster response speed, better color purity and brightness, higher contrast, etc.
In the prior art, the aspect ratio of each sub-pixel of a standard RGB display panel is about 3:1, and adjacent red, green and blue sub-pixels in the same row form a pixel unit for displaying various colors.
In order to improve the visual effect, people put higher and higher demands on the resolution of the display panel; this requires that the number of sub-pixels in the same area is increasing, i.e. the size of the sub-pixels is getting smaller. But due to process limitations, the sub-pixel size cannot be scaled down indefinitely. How to increase the aperture opening ratio of the display panel and reduce the difficulty of the preparation process of the display panel is an important problem generally faced in the industry.
Disclosure of Invention
In view of the foregoing, the present invention provides a display panel and an electronic device including the display panel.
The present invention provides a display panel, comprising: a plurality of sub-pixels and a plurality of pixel units, wherein: the pixel unit is a minimum repeating unit of the display panel for realizing the display function, and the sub-pixel is a minimum unit capable of emitting single color light in the display panel;
the plurality of sub-pixels comprise at least a first color sub-pixel, at least a second color sub-pixel and at least a third color sub-pixel;
the arrangement mode of the plurality of sub-pixels is as follows: with the sub-pixel grids as repeating units, respectively repeating the arrangement in a first direction and a second direction, wherein the first direction intersects with the second direction;
the sub-pixel grid is specifically a 2 × 2 sub-pixel matrix, and the 2 × 2 sub-pixel matrix comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are arranged in a clockwise direction;
the first sub-pixel and the third sub-pixel are first color sub-pixels, the second sub-pixel is a second color sub-pixel, and the fourth sub-pixel is a third color sub-pixel;
the plurality of sub-pixels are arranged in one-to-one correspondence with the plurality of pixel units.
The invention also provides electronic equipment comprising the display panel.
The invention provides a display panel and an electronic device comprising the same, wherein the display panel comprises a plurality of sub-pixels and a plurality of pixel units, and the plurality of sub-pixels comprise at least a first color sub-pixel and at least a second color sub-pixel; the plurality of sub-pixels are arranged in one-to-one correspondence with the plurality of pixel units. Through the pixel borrowing technology, the sub-pixel of the display panel can borrow the brightness of other sub-pixels adjacent to the sub-pixel, a brightness center is formed, thereby the display panel can be used as a pixel unit, a plurality of sub-pixels and a plurality of pixel units can be arranged in a one-to-one correspondence mode, the display panel can ensure that the aperture opening ratio is high, the preparation process difficulty is greatly reduced, the preparation process yield of the display panel is improved, the preparation cost of the display panel is remarkably reduced, the display performance of the display panel can be greatly improved, and comfortable user experience is provided.
Drawings
FIG. 1 is a schematic diagram of a pixel borrowing method in the prior art;
FIG. 2 is a schematic diagram of another pixel borrowing method in the prior art;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of another display panel provided in the embodiment of the present application;
FIG. 5 is an enlarged view of area A of FIG. 4;
6-8 are schematic diagrams of some implementations of sub-pixel grids provided by embodiments of the present application;
FIG. 9 is a schematic diagram illustrating a luminance borrowing manner of a pixel unit corresponding to a first sub-pixel according to an embodiment of the present application;
FIG. 10 is a schematic diagram illustrating a luminance borrowing manner of a pixel unit corresponding to a second sub-pixel according to an embodiment of the present application;
fig. 11 is a schematic structural diagram of a sub-pixel provided in an embodiment of the present application;
fig. 12 is a schematic diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Further, in the following description, the same reference numerals are used in the drawings to designate the same or similar structures, and thus their repetitive description will be omitted.
Also, the drawings and description of the embodiments are to be regarded as illustrative in nature, and not as restrictive. Like reference numerals refer to like elements throughout the specification. In addition, the thickness of some layers, films, panels, regions, etc. may be exaggerated in the drawings for understanding and ease of description. It will also be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In addition, "on … …" means that an element is positioned on or under another element, but does not essentially mean that it is positioned on the upper side of the other element according to the direction of gravity. For ease of understanding, the figures of the present invention depict one element on top of another.
Additionally, unless explicitly described to the contrary, the word "comprise", and variations such as "comprises" or "comprising", will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.
It should also be noted that references to "and/or" in embodiments of the invention are intended to include any and all combinations of one or more of the associated listed items. In the embodiments of the present invention, the various components are described by "first", "second", and the like, but these components should not be limited by these terms. These terms are only used to distinguish one component from another. Also, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
First, referring to fig. 1 and fig. 2, fig. 1 and fig. 2 are schematic diagrams of some pixel borrowing methods commonly used in the prior art. As mentioned above, the aspect ratio of each sub-pixel of the standard RGB display panel in the prior art is about 3:1, and the adjacent red, green and blue sub-pixels in the same row together form a pixel unit for displaying various colors. However, as the resolution of the display panel is improved, the size of the sub-pixel is smaller and smaller, and thus higher requirements are placed on the manufacturing process of the display panel. Thus, a pixel borrowing technique (pixel borrowing) has appeared, which makes the display panel achieve the same resolution with a smaller number of sub-pixels by borrowing the brightness of the surrounding sub-pixels, so that the size of the single sub-pixel is not too small, thus reducing the process difficulty of the display panel to a certain extent.
As shown in the pixel arrangement of fig. 1, in a plane formed by the first direction X and the second direction Y, the display panel includes three kinds of sub-pixels 01, 02, and 03 arranged in an array, and the pixel unit 010 includes two adjacent sub-pixels 02 and 03 by using a pixel borrowing technique, so that the pixel unit 010 can display various colors by borrowing the brightness of the sub-pixel 01 adjacent to the two adjacent sub-pixels 02 and 03. In addition, as shown in fig. 2, in a plane formed by the first direction X and the second direction Y, the display panel includes three sub-pixels 04, 05, and 06 arranged in an array, and by using a pixel borrowing technique, the display panel can equivalently include a pixel unit 020 arranged in an array, wherein the pixel unit 020 equivalently includes two adjacent sub-pixels 021, so that the pixel unit 020 can realize display of various colors. The two common pixel borrowing schemes can avoid that the size of a single sub-pixel is too small to a certain extent, and have certain help for the preparation process of the display panel. However, for realizing a display panel with ultra-high resolution, due to its own limitations, such a pixel arrangement method still cannot meet the requirements even though a pixel borrowing technology is used.
For example, for the pixel borrowing method shown in fig. 2, in order to realize an ultra-high definition resolution of 4k2k and 5.5 inches in a high-resolution OLED display device, the size of one pixel is as low as 32um, and considering the limit of the inside and outside Shadow Effect (Shadow Effect) of the OLED evaporation Mask and the Mask bridge (Mask bridge) of the same color, the total aperture ratio of the finally designed red, green and blue (RGB) color is less than 3%
The aperture ratio is not possible to realize normal display, and if the aperture ratio is ensured not to be lost, great color mixing risk is inevitably born, the display quality is reduced, and the manufacturing difficulty of the evaporation mask is increased.
In view of the above problems of the prior art, the present invention provides a display panel and an electronic device including the same, wherein the display panel includes a plurality of sub-pixels and a plurality of pixel units, and the plurality of sub-pixels include at least a first color sub-pixel and at least a second color sub-pixel; the plurality of sub-pixels are arranged in one-to-one correspondence with the plurality of pixel units. Through the pixel borrowing technology, the sub-pixel of the display panel can borrow the brightness of other sub-pixels adjacent to the sub-pixel, a brightness center is formed, thereby the display panel can be used as a pixel unit, a plurality of sub-pixels and a plurality of pixel units can be arranged in a one-to-one correspondence mode, the display panel can ensure that the aperture opening ratio is high, the preparation process difficulty is greatly reduced, the preparation process yield of the display panel is improved, the preparation cost of the display panel is remarkably reduced, the display performance of the display panel can be greatly improved, and comfortable user experience is provided.
In the following description, various possible implementations of the present application will be described by taking an application of the technical solution of the present application in an OLED panel as an example. Fig. 3 is a schematic view of a display panel according to an embodiment of the present disclosure; a display panel 100, comprising: a plurality of sub-pixels and a plurality of pixel units 104, wherein the plurality of sub-pixels include at least a first color sub-pixel 101 and at least a second color sub-pixel 102; the plurality of sub-pixels are arranged in one-to-one correspondence with the plurality of pixel units 104. It should be noted that, the pixel unit described in this application refers to a minimum repetition unit that the display panel has for implementing the display function, each pixel unit can emit light with a wavelength in a specific band that is required for implementing the display function of the display panel, and the pixel points of the display panel are formed by repeatedly arranging a plurality of pixel units, so that the display panel can perform normal display. The sub-pixel refers to a minimum unit capable of emitting light of a single color in a display panel, and the display panel can be provided with a plurality of sub-pixels capable of emitting light of different colors; for example, in the case of an organic light emitting display panel, each of the sub-pixels thereof may include a pixel driving circuit and a light emitting device, wherein the light emitting device may further include a first electrode, a light emitting function layer, and a second electrode which are stacked.
In the related art, for the real RGB (standard RGB) type display panel, the adjacent red sub-pixels, green sub-pixels and blue sub-pixels in the same row form a pixel unit to display, that is, one pixel unit of the real RGB type display panel corresponds to 3 sub-pixels with different colors, whereas in the display panel of the type shown in fig. 1 and 2 in the related art, the pixel unit 010 includes two adjacent sub-pixels 02 and 03, and the pixel unit 020 includes two adjacent sub-pixels 021, that is, one pixel unit corresponds to 2 sub-pixels with different colors. It can be seen that, in any type of display panel in the prior art, to realize a normal display function, each pixel unit corresponds to at least two or more sub-pixels, and as the resolution is increased, the reduction of the pixel size of each sub-pixel still faces inevitable challenges.
In the embodiments of the present application, the inventor has further analyzed the limitations of the prior art, and has creatively proposed that, in a display panel including pixels of different colors, a plurality of sub-pixels and a plurality of pixel units are arranged in a one-to-one correspondence manner, that is, one pixel unit corresponds to one sub-pixel, and each sub-pixel corresponds to one pixel unit. The display panel obtained in the way successfully breaks through the limitation that each pixel unit at least corresponds to two or more sub-pixels in the prior art, and the physical size of the display unit is reduced to the minimum as possible. The preparation process difficulty of the display panel is greatly reduced while the high aperture opening ratio is ensured in the application of the display panel with high resolution, so that the preparation process yield of the display panel is improved, the preparation cost of the display panel is obviously reduced, the display performance of the display panel can be greatly improved, and comfortable user experience is provided.
It should be noted that, in the embodiment of the present application, the display panel 100 may only include two sub-pixels emitting light of different colors, namely, the first color sub-pixel 101 and the at least second color sub-pixel 102, so as to be applied to a specific display scene, that is, the display panel of the embodiment of the present application may be a display panel that does not include three or more different color sub-pixels to realize full color display. For example, the display panel only contains red and green sub-pixels and does not contain blue sub-pixels, so that the display panel is suitable for being applied to a specific display scene and not used for full-color display. The concrete can be determined according to the practical application condition.
Of course, as shown in fig. 4, the display panel 100 may also include at least a third color sub-pixel 103, and the plurality of sub-pixels and the plurality of pixel units 104 are disposed in a one-to-one correspondence. That is, the display panel 100 may include three sub-pixels emitting light of different colors.
Referring to fig. 5, fig. 5 is an enlarged view of a region a in fig. 4, specifically illustrating a pixel arrangement manner provided in an embodiment of the present application. As can be seen from fig. 5, the arrangement of the plurality of sub-pixels of the display panel is as follows: the sub-pixel grids 110 are used as repeating units and are repeatedly arranged in a first direction X and a second direction Y, wherein the first direction X intersects with the second direction Y. Referring to fig. 6-8, the sub-pixel grid 110 is a 2 × 2 sub-pixel matrix, and the 2 × 2 sub-pixel matrix includes a first sub-pixel 111, a second sub-pixel 112, a third sub-pixel 113, and a fourth sub-pixel 114 arranged in a clockwise direction; the first sub-pixel 111 and the third sub-pixel 113 have the same light emitting color, and are the first color sub-pixel, the second sub-pixel 112 is the second color sub-pixel, and the fourth sub-pixel 114 is the third color sub-pixel of the display panel.
Further, as shown in fig. 5, the display panel further includes a plurality of scan lines 120 extending along the first direction X and a plurality of data lines 130 extending along the second direction Y, and the plurality of data lines 130 and the plurality of scan lines 120 intersect to define a plurality of sub-pixels according to the embodiment of the present application. In other implementations, it is also possible that the data lines extend along the first direction X, and the scan lines extend along the second direction Y; or the extending direction of the scan lines may be deviated from the first direction by a certain angle, and the extending direction of the data lines may be deviated from the second direction by a certain angle. This is not a limitation of the present application.
Here, it should be further noted that the first direction X and the second direction Y referred to in this application may be in a plane in which the display panel is located, and when the display panel is a flexible display panel, the plane in which the first direction X and the second direction Y are located may be a plane in which the flexible display panel is laid out flat. In some implementations, the first direction X and the second direction Y are perpendicular. In other implementations, the first direction X and the second direction Y may not be perpendicular to each other, and the included angle between the first direction X and the second direction Y may be an acute angle or an obtuse angle, which is not limited in this application.
Optionally, as shown in fig. 6, in the above embodiment of the present application, the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a red sub-pixel, and the third color sub-pixel is a blue sub-pixel; or the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a blue sub-pixel, and the third color sub-pixel is a red sub-pixel. That is, the sub-pixels 111 and 113 emit light of the same color and are both green sub-pixels, and the sub-pixels 112 and 114 are red sub-pixels and blue sub-pixels, respectively. The inventor finds that the arrangement mode of the sub-pixel grids can enable human eyes to have better visual perception from the visual angle and obtain comfortable visual experience.
In other implementations, the sub-pixel grid of the embodiment of the present application may also be arranged in a manner that, as shown in fig. 7, the sub-pixels 111 and 113 have the same emission color and are both red sub-pixels, and the sub-pixels 112 and 114 are respectively green sub-pixels and blue sub-pixels; alternatively, as shown in fig. 8, the sub-pixels 111 and 113 have the same emission color and are both blue sub-pixels, and the sub-pixels 112 and 114 are green sub-pixels and red sub-pixels, respectively. Next, a pixel borrowing method according to an embodiment of the present application will be described by taking the sub-pixel grid arrangement mode shown in fig. 6 as an example.
In order to achieve the effect that a plurality of sub-pixels and a plurality of pixel units can be arranged in a one-to-one correspondence manner, the inventor, through careful consideration and intensive research, proposes the following pixel borrowing method: the brightness of the pixel unit corresponding to the first sub-pixel 111 is obtained by the first sub-pixel 111 by using the brightness of each sub-pixel which is adjacent to the first sub-pixel 111 and has a different light-emitting color from the first sub-pixel 111; the luminance conversion algorithm of the pixel unit corresponding to the third subpixel 113 is the same as the luminance conversion algorithm of the pixel unit corresponding to the first subpixel. Through the pixel arrangement and pixel borrowing technology, the sub-pixels of the display panel can borrow the brightness of other sub-pixels adjacent to the sub-pixels, and a brightness center is formed, so that the display panel can be used as a pixel unit, a plurality of sub-pixels and a plurality of pixel units can be arranged in a one-to-one correspondence mode, the display panel can ensure that the aperture opening ratio is high, the difficulty of the preparation process is greatly reduced, the preparation process yield of the display panel is improved, the preparation cost of the display panel is remarkably reduced, the display performance of the display panel can be greatly improved, and comfortable user experience is provided.
Optionally, the brightness of the pixel unit corresponding to the second sub-pixel 112 is obtained by the second sub-pixel 112 by using the brightness of each sub-pixel adjacent to the second sub-pixel 112; the luminance conversion algorithm of the pixel unit corresponding to the fourth sub-pixel 114 is the same as the luminance conversion algorithm of the pixel unit corresponding to the second sub-pixel 112. By the pixel arrangement and borrowing manner of the above embodiment of the present application, each sub-pixel corresponds to one pixel unit, and if a display with a resolution of a (horizontal) b (vertical) is to be presented, the number of the total sub-pixels is also a (horizontal) b (vertical). In addition, for the OLED display panel, considering the limitations of the inner and outer shades of the evaporation Mask and the Mask bridge of the same color, the total aperture opening ratio of the finally designed RGB color can reach 15% (R: G: B: 1:1:1), compared with the prior art, the aperture opening ratio is greatly improved, the color mixing risk is reduced, and the manufacturing difficulty of the evaporation Mask (EL Mask) is reduced.
Based on the above, a specific luminance conversion algorithm is further provided in another embodiment of the present application, and the following describes in detail a specific luminance conversion algorithm further provided in an embodiment of the present application with reference to fig. 9 and 10. Fig. 9 is a schematic diagram of a luminance borrowing method of a pixel unit corresponding to a first sub-pixel according to an embodiment of the present application, and fig. 10 is a schematic diagram of a luminance borrowing method of a pixel unit corresponding to a second sub-pixel according to an embodiment of the present application.
As shown in FIG. 9, the luminance of the pixel unit corresponding to the first sub-pixel 11(111) is obtained by the first sub-pixel 11(111) by the sub-pixel 12,The luminances of the sub-pixel 13, the sub-pixel 14, and the sub-pixel 15 are obtained; the sub-pixel 12, the sub-pixel 13, the sub-pixel 14 and the sub-pixel 15 are respectively adjacent to the first sub-pixel 11(111) and different from the first sub-pixel in light emitting color. Specifically, the brightness L of the pixel unit corresponding to the first sub-pixel1Obtained according to the following luminance conversion algorithm:
L1＝m(L11+L12/8+L13/8+L14/8+L15/8)，
wherein L is11Is the brightness of the first sub-pixel, L12、L13、L14、L15The brightness of each sub-pixel which is adjacent to the first sub-pixel and has different light-emitting color from the first sub-pixel is respectively, m is a first brightness adjusting coefficient, and m is more than 0 and less than or equal to 1.
The pixel arrangement and pixel brightness conversion method of the embodiment of the application enables the sub-pixels of the display panel to borrow the brightness of other sub-pixels adjacent to the sub-pixels, and forms a brightness center, so that the sub-pixels can be used as a pixel unit, and the sub-pixels and the pixel units can be arranged in a one-to-one correspondence manner, so that the display panel can ensure high aperture opening ratio, greatly reduces the difficulty of the preparation process, improves the preparation process yield of the display panel, remarkably reduces the preparation cost of the display panel, greatly improves the display performance of the display panel, and provides comfortable user experience.
Optionally, as shown in fig. 10, the luminance of the pixel unit corresponding to the second sub-pixel 21(112) is obtained by the second sub-pixel 21(112) by using the luminances of the surrounding sub-pixels 22, 23, 24, 25, 26, 27, 28 and 29; wherein the sub-pixel 22, the sub-pixel 23, the sub-pixel 24, the sub-pixel 25, the sub-pixel 26, the sub-pixel 27, the sub-pixel 28 and the sub-pixel 29 are respectively adjacent to the second sub-pixel 21(112) and different from the second sub-pixel in light emission color. Specifically, the luminance L of the pixel unit corresponding to the second sub-pixel2Obtained according to the following luminance conversion algorithm:
L2＝n(L21+L22/8+L23/4+L24/8+L25/4+L26/8+L27/4+L28/8+L29/4)
wherein L is21Is the luminance of the second sub-pixel, L22、L23、L24、L25、L26、L27、L28、L29The brightness of each sub-pixel adjacent to the second sub-pixel is respectively, n is a second brightness adjusting coefficient, and n is more than 0 and less than or equal to 1.
The inventor has found through intensive research that, in some implementations, when a relationship between a first luminance adjustment coefficient m and a second luminance adjustment coefficient n satisfies that m is equal to n/2, when a display panel based on the pixel arrangement mode of the above embodiment of the present application performs pixel borrowing, a luminance conversion algorithm is relatively simple, an operation load of an IC chip is relatively low, and a finally obtained picture has relatively good color uniformity, so that occurrence of color mixing and color cast can be avoided to a great extent; in addition, the inventor also finds that when m is equal to n/2, human eyes have better visual perception and the visual sensory experience is more comfortable. Further, optionally, m is 1/2, and n is 1, so that a simpler calculation method is conveniently obtained, the calculation load is further reduced, and a better visual experience is obtained.
In some implementations, the luminance conversion algorithm of the pixel unit corresponding to the third sub-pixel is the same as the luminance conversion algorithm of the pixel unit corresponding to the first sub-pixel; and the brightness conversion algorithm of the pixel unit corresponding to the fourth sub-pixel is the same as that of the pixel unit corresponding to the second sub-pixel. The OLED display panel adopting the pixel brightness conversion method of the embodiment has lower preparation process difficulty and can obtain excellent display performance; meanwhile, the total aperture opening ratio of the final design of the panel can be improved to 15%, so that the aperture opening ratio is greatly improved, and the color mixing risk is reduced.
Note also that, in the display panel according to the above embodiments of the present application, each sub-pixel may have an approximately square shape. For example, as shown in fig. 5, each sub-pixel may have an approximately square shape. The term "approximately square" herein means that the pattern may be square, or may be a square shape due to process or design reasons, and may have a certain deviation from the true square pattern, for example, the side length of the sub-pixel may have a certain deviation, or the included angle of the vertex angle of the sub-pixel may have a certain deviation from the right angle, or the vertex angle of the sub-pixel may be formed into a shape of an approximately round angle. In addition, it should be understood by those skilled in the art that, in addition to the sub-pixels having an approximately square shape, some or all of the sub-pixels may have other shapes, such as multiple variations of approximately rectangular, approximately rhombic, approximately elliptical, approximately circular, approximately regular hexagonal, approximately trapezoidal, and the like, and the present application is not limited thereto.
Optionally, in the display panel of the foregoing embodiments of the present application, the plurality of sub-pixels have approximately equal areas. For example, as shown in fig. 5, the sub-pixels may be arranged to have approximately equal areas. The approximately equal areas mentioned here mean that the areas of the sub-pixels in the display panel may all be equal and constant, or may have a certain variation in area among the sub-pixels or among the sub-pixels of different colors due to process or design reasons, but may be considered approximately equal. It should be noted that in some other implementations of the embodiments of the present application, all of the sub-pixels of the display panel may not have approximately equal areas, for example, the area of the sub-pixels in some regions may be designed to be larger than the area of the sub-pixels in other positions, or the area of the sub-pixels in some colors may be designed to be larger than the area of the sub-pixels in other colors, and the like, for example, the area of the sub-pixel in green may be designed to be half of the area of the sub-pixel in red or the sub-pixel in blue. The present application is not limited thereto, as the case may be.
When the display panel is an OLED display panel, each of the plurality of sub-pixels includes a pixel driving circuit and a light emitting device; the light-emitting device comprises a first electrode, a light-emitting function layer and a second electrode which are arranged in a stacked mode. Specifically, the details will be described with reference to fig. 11. As shown in fig. 11, each of a plurality of sub-pixels of the display panel includes a pixel driving circuit 140 and a light emitting device 150.
Wherein the light emitting device 150 includes a first electrode 151, a light emitting function layer 152, and a second electrode 153, which are stacked. The pixel driving circuit 140 may include one or more of various thin film transistor elements such as a driving transistor and a switching transistor, and various elements such as a storage capacitor, and is electrically connected to the OLED light emitting device 150 for driving the OLED light emitting device 150 to emit light normally. The OLED panel is an Active Matrix Active drive (Active Matrix) OLED display panel, wherein the thin film transistor may be an a-Si TFT (amorphous silicon thin film transistor), or may also be various types of thin film transistors such as LTPS (low temperature polysilicon), oxide TFT, OFET (Organic Field effect transistor), or a hybrid TFT, which is not limited in this application. The flexible panel of the present application may be driven by a passive matrix active drive (pasivematrix) or the like, but the present application is not limited thereto.
In some implementations, the first electrode 151 functions as an anode and may be formed of various conductive materials. For example, the first electrode 151 may be formed as a transparent electrode or a reflective electrode according to its use. When the first electrode 151 is formed as a transparent electrode, the first electrode 151 may include Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), or the like, and when the first electrode 151 is formed as a reflective electrode, a reflective layer may be formed of Ag, magnesium (Mg), Al, Pt, Pd, Au, Ni, Nd, iridium (Ir), Cr, or a mixture thereof, and a material such as ITO, IZO, ZnO, or In2O3 may be formed on the reflective layer.
The light emitting function layer 152 is positioned on the first electrode 151, and the portion of the first electrode 151 on which the light emitting function layer 152 is disposed is not covered by the pixel defining layer and is exposed. The light emitting function layer 152 may be formed through a vapor deposition process, and in the OLED panel, the light emitting material layer is patterned to correspond to each sub-pixel, that is, to correspond to the patterned first electrode film layer.
The light emitting function layer 152 may be formed of a low molecular weight organic material or a high molecular weight organic material, and the light emitting function layer 152 includes an organic emission layer, however, the light emitting function layer 152 may include other various function layers in addition to the organic emission layer. For example, one or more of a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an Electron Transport Layer (ETL), and an Electron Injection Layer (EIL) may be further included.
A second electrode 153 (as a cathode of the light emitting device 150) is positioned on the light emitting function layer 152. The second electrode 153 may be formed as a transparent electrode or a reflective electrode, similar to the first electrode 151. The optional first electrode comprises silver. Further, it will be understood by those skilled in the art that the second electrode 153 may also serve as an anode of the light emitting device 150 in addition to serving as a cathode of the light emitting device 150, and correspondingly, the first electrode 151 may also serve as a cathode of the light emitting device 150 in addition to serving as an anode of the light emitting device 150.
It should be noted that, although the above embodiments of the present application are illustrated by OLED panels, the display panel 100 provided in the embodiments of the present application may also be various types of display panels such as liquid crystal display panels, electronic paper, QLED (Quantum Dot light emitting Diodes) display panels, or micro LED (micro light emitting diode) panels. The display panel may be a bottom emission type panel, a top emission type panel, a dual-sided display panel, a transparent display panel, or other modes of display panels, which is not limited in the present application.
In addition, as shown in fig. 12, an electronic device 200 including the display panel 100 is further provided in the embodiment of the present application. It should be noted that the electronic device 200 may be any electronic product with a display function, including but not limited to the following categories: the mobile phone comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, a mobile phone, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal, electrophoresis display equipment, electronic paper and the like. The electronic device 200 may be a rigid display terminal or a flexible display device, which is not limited in this application.
Further, the electronic device 200 further provided in the embodiment of the present application may further include a driving chip 300 for controlling the display panel 100 to display, and the driving chip 300 is integrated with the luminance conversion algorithm. That is, the display device 200 according to the embodiment of the present application may perform display driving through the driving chip integrated with the luminance conversion algorithm, so as to realize pixel borrowing of the display panel provided in the embodiment of the present application, thereby realizing high resolution display of the display panel while ensuring a high aperture ratio. In other implementations, the luminance conversion algorithm may be integrated into other components of the electronic device 200, such as an array substrate, a data driver, and a printed circuit board, to implement the display function of the present application, which is not limited in this application.
The invention provides a display panel and an electronic device comprising the same, wherein the display panel comprises a plurality of sub-pixels and a plurality of pixel units, and the plurality of sub-pixels comprise at least a first color sub-pixel and at least a second color sub-pixel; the plurality of sub-pixels are arranged in one-to-one correspondence with the plurality of pixel units. Through the pixel borrowing technology, the sub-pixel of the display panel can borrow the brightness of other sub-pixels adjacent to the sub-pixel, a brightness center is formed, thereby the display panel can be used as a pixel unit, a plurality of sub-pixels and a plurality of pixel units can be arranged in a one-to-one correspondence mode, the display panel can ensure that the aperture opening ratio is high, the preparation process difficulty is greatly reduced, the preparation process yield of the display panel is improved, the preparation cost of the display panel is remarkably reduced, the display performance of the display panel can be greatly improved, and comfortable user experience is provided.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (16)

1. A display panel, comprising: a plurality of sub-pixels and a plurality of pixel units, wherein:
the pixel unit is a minimum repeating unit of the display panel for realizing a display function, and the sub-pixel is a minimum unit capable of emitting single color light in the display panel;
the plurality of sub-pixels comprise at least a first color sub-pixel, at least a second color sub-pixel, and at least a third color sub-pixel;
the arrangement mode of the plurality of sub-pixels is as follows: repeatedly arranging in a first direction and a second direction respectively by taking a sub-pixel grid as a repeating unit, wherein the first direction is intersected with the second direction;
the sub-pixel grid is specifically a 2 × 2 sub-pixel matrix, and the 2 × 2 sub-pixel matrix includes a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel arranged in a clockwise direction;
the first sub-pixel and the third sub-pixel are the first color sub-pixel, the second sub-pixel is the second color sub-pixel, and the fourth sub-pixel is the third color sub-pixel;
the plurality of sub-pixels and the plurality of pixel units are arranged in a one-to-one correspondence manner;
the brightness L of the pixel unit corresponding to the first sub-pixel1Obtained according to the following luminance conversion algorithm:
L1＝m(L11+L12/8+L13/8+L14/8+L15/8)，
wherein L is11Is the brightness, L, of the first sub-pixel12、L13、L14、L15The brightness of each sub-pixel which is adjacent to the first sub-pixel and has different light-emitting color from the first sub-pixel is respectively, m is a first brightness adjusting coefficient,
0＜m≤1；
the brightness L of the pixel unit corresponding to the second sub-pixel2Obtained according to the following luminance conversion algorithm:
L2＝n(L21+L22/8+L23/4+L24/8+L25/4+L26/8+L27/4+L28/8+L29/4)
wherein L is21Is the luminance of the second sub-pixel, L22、L23、L24、L25、L26、L27、L28、L29Respectively the brightness of each sub-pixel adjacent to the second sub-pixel, n is a second brightness adjusting coefficient,
0＜n≤1。
2. the display panel of claim 1, wherein the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a red sub-pixel, and the third color sub-pixel is a blue sub-pixel.
3. The display panel of claim 1, wherein the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a blue sub-pixel, and the third color sub-pixel is a red sub-pixel.
4. The display panel according to claim 1, wherein the luminance of the pixel unit corresponding to the first subpixel is obtained by the first subpixel using the luminance of each of subpixels that are adjacent to the first subpixel and that have different emission colors from the first subpixel;
and the brightness conversion algorithm of the pixel unit corresponding to the third sub-pixel is the same as that of the pixel unit corresponding to the first sub-pixel.
5. The display panel according to claim 4, wherein the luminance of the pixel unit corresponding to the second sub-pixel is obtained by the second sub-pixel by the luminance of each sub-pixel immediately adjacent to the second sub-pixel;
and the brightness conversion algorithm of the pixel unit corresponding to the fourth sub-pixel is the same as that of the pixel unit corresponding to the second sub-pixel.
6. The display panel of claim 1, wherein m-n/2.
7. The display panel of claim 1, wherein m is 1/2 and n is 1.
8. The display panel according to claim 1, wherein a luminance conversion algorithm of the pixel unit corresponding to the third sub-pixel is the same as a luminance conversion algorithm of the pixel unit corresponding to the first sub-pixel;
and the brightness conversion algorithm of the pixel unit corresponding to the fourth sub-pixel is the same as that of the pixel unit corresponding to the second sub-pixel.
9. The display panel of claim 1, wherein the first direction and the second direction are perpendicular.
10. The display panel of claim 9, further comprising a plurality of scan lines extending in a first direction and a plurality of data lines extending in a second direction, the plurality of data lines and the plurality of scan lines intersecting to define the plurality of sub-pixels.
11. The display panel of claim 1, wherein the plurality of subpixels are approximately square in shape.
12. The display panel of claim 1, wherein the plurality of sub-pixels have approximately equal areas.
13. The display panel according to claim 1, wherein the display panel is an organic light emitting display panel.
14. The display panel according to claim 13, wherein each of the plurality of sub-pixels includes a pixel driving circuit and a light emitting device;
the light-emitting device includes a first electrode, a light-emitting functional layer, and a second electrode which are stacked.
15. An electronic device characterized by comprising a display panel according to any one of claims 1 to 14.
16. The electronic device according to claim 15, further comprising a driving chip for controlling the display panel to display;
the driving chip is integrated with a brightness conversion algorithm.
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